How the Amazon Affiliate Cookie Works: 24 Hours, the 90-Day Cart, and What Pays

The Amazon affiliate cookie is the most-repeated fact in affiliate marketing and one of the most misunderstood. "It lasts 24 hours" is true but incomplete, "it lasts 90 days" is a misreading of a narrower rule, and most explanations skip the two things that end the clock early. Since the cookie decides which clicks you get paid for, the details are worth ten minutes.

This guide uses Amazon's own definitions from its Commission Income Statement: what starts the window, the three things that end it, the cart exception, what you're paid on inside it, and the myths that quietly cost affiliates commissions.

The short answer

When a shopper clicks your link, a 24-hour session starts. You're paid on everything qualifying they order during it. The session can end sooner, when they place an order or click another affiliate's link. Anything they add to the cart during the session still pays if they complete the order within 89 days of the click. That's the whole rule; everything below is the detail.

What Amazon actually calls it

Amazon doesn't say "cookie" in its terms; it says Session. The Commission Income Statement defines a session as beginning "when a customer clicks through that Special Link" and ending at the first of three events:

• 24 hours elapse from the click;
• the customer places an order for a product (other than a digital product);
• the customer clicks through a different Special Link, one that isn't yours.

Technically it's tracked with a browser cookie, which is why the shorthand stuck, but the rules are about the session, not the cookie file. The full text is in Amazon's Program Policies.

The three things that end it

1. Twenty-four hours pass

The clock starts at the click, not at midnight and not at the first page view. A shopper who clicks at 9pm and buys at 8pm the next day is inside the window; one who buys at 10pm is outside it, unless the item was already in the cart.

2. The shopper places an order

An order for a physical product closes the session. Everything in that order is yours; anything they come back and buy an hour later, without clicking your link again, is not. This is the rule most guides leave out, and it matters: two separate orders in one evening are two sessions, and only the first is paid to you unless they clicked your link again. Orders for digital products (a Kindle book, an app) don't end the session.

3. They click someone else's link

If the shopper clicks through another Associate's link before ordering, your session ends and theirs starts. Amazon pays the last affiliate link clicked. The one thing that stays with you is anything the shopper had already put in the cart during your session.

The 89-day cart exception

This is where the "90-day cookie" idea comes from. Amazon's statement says a purchase qualifies if the customer adds a product to the cart during the session and completes the order "no later than 89 days after their initial click-through". So:

• Clicks your link, adds a tent to the cart, buys it three weeks later: paid.
• Clicks your link, looks at the tent, doesn't cart it, comes back three weeks later and buys it: not paid.
• Clicks your link, carts the tent, and three weeks later buys the tent plus a sleeping bag they never carted: paid on the tent, not on the sleeping bag.

The exception covers carted items only. It doesn't extend the general session, and it doesn't cover items the shopper removes from the cart and re-adds later after clicking elsewhere.

What you're paid on inside the session

Everything qualifying the shopper orders, not only the product you linked. This is the most valuable and least advertised part of the program. A reader who clicks a $20 tent-stake link and orders a $250 tent, a $60 sleeping pad and the stakes pays you commission on all three, at each product's own category rate. It's why linking a cheap, obviously useful accessory in a guide about an expensive product works: the click is easy, and the whole cart follows.

Category rates run from 1% to 10%, and the same session can span several; we break the table down in how much Amazon Associates pays. Bounties, the fixed payments for actions like a Prime trial, also count if they happen inside the session.

What doesn't count, even inside the window

• Your own purchases, or purchases by friends and family you sent through your link.
• Returned items. A return inside Amazon's return window reverses the commission.
• Orders placed after the session ended for items that weren't in the cart.
• Traffic from paid search on Amazon's trademarks, or links shown on a search engine, both disqualified by the program rules.
• Gift cards and a few other categories that pay 0%.

Why 24 hours hurts less than it sounds

Compared with other programs, a one-day window looks stingy; ClickBank's cookie lasts 60 days, and plenty of retail programs give 30. In practice Amazon's short session costs affiliates less than the number suggests, for two reasons.

First, Amazon buyers buy fast. A shopper who arrives from a buyer guide already has an account, a saved card and a decision half made; most purchases from affiliate links happen within hours, and the ones that don't are usually in the cart, where the 89-day rule catches them. Second, the cart-wide payout offsets the short window: one well-timed click often pays on an order two or three times the price of the product you linked. We ran the comparison in full in ClickBank vs Amazon Associates; per visitor, Amazon usually comes out ahead despite the cookie.

Myths that cost commissions

Working with the window rather than against it

• Send buyers, not browsers. Buyer-intent keywords ("best X", "X vs Y", "X review") deliver shoppers who order inside the window. Informational traffic mostly doesn't.
• Link the product, not the store. Deep links to the exact product page cut the steps between click and cart.
• Include the obvious accessories. Cheap add-ons are easy clicks that start a session for a bigger cart.
• Make the comparison table clickable. Readers who've decided want the shortest path; every product name and button should be a link.
• Keep pages current. A link to a discontinued or out-of-stock product starts a session that ends with nothing in the cart.

All of that is a content problem more than a cookie problem: pages built around the right products, at current prices, with links in the right places, across enough keywords that the sessions add up. That's the job AffSERP is built for. Give it a keyword list and it pulls live Amazon product data, writes the buyer guide or comparison the search intent calls for, puts your tracking ID in every product link and button, and publishes to your site, so every session you start begins on the product page with the cart one click away.

FAQ

How long does the cookie last?

24 hours from the click, ending sooner if the shopper places an order or clicks another affiliate's link. Items carted during the session pay if bought within 89 days.

24 hours or 90 days?

Both, for different things: 24 hours for the session, 89 days only for items already in the cart.

Do I earn on everything they buy?

Yes, on everything qualifying ordered in the session, at each product's category rate.

What if they click another affiliate's link?

Your session ends; the last link clicked gets the sale. Items already carted during your session stay yours.

Keep reading

Amazon Affiliate How to Earn Commission on Amazon: A Step-by-Step Guide From joining Associates to your first payout: links, content, traffic, reports and the mistakes to avoid.

Amazon Affiliate How to Create Amazon Affiliate Links (SiteStripe, Link Builder, and by Hand) Four ways to build a link that pays, what each part of the URL does, and the rules that void one.